Escapement mechanism of type-writing machines.



A. SGHNEELOGH. ESGAPEMENT MECHANISM OF TYPE WRITING MACHINES.

APPLICATION FILED 0OT.-9, 1902.

Patented Dec.28, 1909.

3 SHEETS-SHEET 1.

INVENTOR nzyw awa 44 arromgx m S S E m I W A. SGHNEELOCH. ESGAPEMENT MEGHANISM OF TYPE WRITING MACHINES.

Patented Dec. 28, 1909.

APPLICATION FILED OCT. 9, 1902.

3 SHEETS-SHEET 2.

INVENTOR wi wp /i %Z/WW TTORN I WITNESSES:

A. SOHNELLOGH. ESGAPEMENT MECHANISM OF TYPE WRITING MAGHINES.

APPLICATION FILED 001:.9, 1902.

' Patented Dec. 28, 1909.

8 SHEETS-SHEET 3.

INVENT OR 7 wwwflw BY W1? NESSE S OQTTORNEY.

nsi'rnn PATENT orai'on.

AUGUST SCHNEELOCI-I, OF SYRACUSE, NEW YORK, ASSIGNOB TO E. C. $TEARNS & (30.,

. 0F SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

ESCAPEMENT MECHANISM OF TYPE-WRITING MACHINES.

Specification of Letters Patent.

Patented Dec. 28, 1909.

Original application filed May 9, 1902, Serial No. 106,524. Divided and this application ,filed October 9,

1902. Serial -of the invention, such as will enable-others,

skilled in the art to which it appertains to make and use the same.

My invention relates to the carriage operating and escapement mechanism of a typewriting machine, and consists in a new construction, arrangement of parts, mode of operation and certain details. It is a division of my application filed May 9th, 1902, Sc

rial No. 106,524. My invention is fully shown in the drawing herewith, in which the reference letters and numerals of the specification indicate the corresponding parts in 'all the figures. Figure I is a vertical section. Fig. II is a rear elevation with tho carriae removed and parts broken away. Figs. III and IV are respectively top plan and front elevation of the esca ement mechanism enlarged. Figs. V and V are elevations respectively of the loose dog and of the stationary dog. Figs. VII and VIII arerespectively top plan and front elevation of the preferred form of escapement.

In the figures-=1 indicates the main frame of the machine, 29 the front bar carrying rollers 27, 13 the. rear grooved run-way .for the carriage, 2 one of the key levers, j the key lever bracket, 12 the link thereon engaging with universal bar 4, and by intermediate link y, connectedto the type-bar 3, hung on suitable hanger 190, S8( ared on the segment 188 by screw 191.

24- indicates the carriage side pieces, carrying the carriage front bar 26, and 28 the rear bar of the carriage frame grooved at 22 to engage with balls 23.

1.86 is the platen.

98 is the pinion on the spring barrel engaging with carriage rock 128:

()n universal bar rod 5, journaled at each end in the frame of the machine, are fixed the universal bar arms 6, connected by links 8 attached to their upper ends,.to the universal bar 4, retained by spring 7 coiled on rod 5 in its rear position and guided in its forward and backward movement by slotted pieces 9 on key-lever bracket j. On said rod 5 is also fixed the lower, ratchet arm 10 link 12 and the vertical rod 11 is raised to rock the dog support 16. through link 20 and operate the escape'ment mechanism. Attached to the rear of the frame of the machine is the said grooved run-Way 13, provided with anti-friction balls 23 for the support of the carriage. On this run-way 13 is supported, by suitable screws 15 15, the escapement bracket 14, on which is journaled, at 17, the two armed dog support carrying on its upper arm loose dog 19 and on its lower arm the adjustable stationary dog 18, and having its lower arm connected LO vertical rod 11 by link 20. Loose dog lJJhun on pin 7c, has pina fitting curved slot 6, centered .on is, in upper arm of dog support, and is held in position by spring 0, engaging with pin a and also bearing on stud d.

J ournaled in the escapementbracket 1% is-shaft g, on the front end of which is fixed the escapementwheel f, having crown teeth 0 on its front face; on said shaft is also fixed the pinion h, engaging with carriage rack 34. In brackets 30 011 the rear bar 28 are journaled arms 32 32, carrying the carriage rack 34,. maintained in elevated position by spring 35 to engage with escapement'pinion h, by which the carriage is held from moving'to'ward the left in obedience to spring barrel 37. Bylevcr 36, at the left of the machine, the operator may depress rack34 out of engagement with pinion 71. As the key is depressed and Vertical rod 11 thereby elevated, loose dog 19 is withdrawn from engagement with escapcment teeth and stalionanv dog 18 advanced into engagement, and as the key is released the dog carrier drops back and the dogs assume their normal position, whereby, in obedience to the spring barrel, the carriage is movcl one letter space. By adjustment of stationary dog 18 along the lower arm by means of screws arranged in the-slots, this movement may be divided between the up stroke of the stationary dog and the down stroke,

. return stroke.

take .place entirely on the or arranged to For a fast opera-tor, dlVlding "it between the up anddown strokes is 19 in position preferable; for a slow operator, all or mostly on the return. It will, .of course, be understood that in point of time the first portion of the whole movement of the carriage in the advancement from one position to the next is made as the type-leveris depressed, that is as the dog carrier anddogs are rocked upwardly.

Spring 0 and slot 1) co'ciperate to lock dog to prevent the movement of the escapement wheel'in obedience to the spring barrel,- and return this dog into of engagement when the .carriage'is returned to the right. Set screw g limits the movement. h

InFigs. VII and VIII I have shown my preferredconstruction, in which the pinion h is journaled and not fixed on the shaft g,

butis provided with ratchet teeth I), with whi h engages the dog 0 pressed out mto eng gement by a spring d,-carried in a collar 0, fixed onthe shaft by set screw f,

whereby during the forward movement the pinion is locked to the escapemeiit wheel, but

when the carriage is returned toward the right, the pinion h rotates freely, the ratchet struction, the slot 1) is made smaller to limit the upward movement of the pina by the spring 0, permitting the dogto slip over the tooth in the action of the esoapement, when I the dog support is rocked, but notpermitting the movement of the'car riage in either direction.

My esca-pement mechanism .is rapid and positive in operation, and may beadjusted as described. I do not limit myself to the mechanism shown as that may be varied in construction and management.

Having thus described my. invention, what Iclaim as new and desire to secure by Letthe rac ters Patent, is-' a ls 1. In the escapement mechanism of a typewriting machine, the combination with a shaft suitably journaled on the-machine frame, pinion on said shaft engaging with an escapement wheel on-said shaft havinggcrownteeth on its front surface, a

wtwo aligned dog carrier journaled on the f the machine adjacent to the escapeframe ment wheel, a swinging dog on the upper arm ,of-said carrier, a stationary dog on the pression of each key.

lower arm of said carrier, means to adjust. the stationary-dog along said lower arm to.

divide the motion of the escapement wheel, and means to rock the dog carrier at the de- In the escapeinent mechanism of a typewrit ng machine, the combination with the carriage, of the escapement wheel shaft suitably journaled on the frame, a pinion on said shaft engaging with the rack, an escapement wheel on the shaft having marginal teeth on its front surface, a two armed dog carrier. suitably journaled on the frame of the machine, a loose dog hung on the upper arm of the carrier and having a guide pm engaging in a. slot on said arm, a spring on said arm engaging withsaid guide pin for holding the swinging dog in positlon, a sta.-' tionary dog, on the lower arm of the carrier,

screws fitted to slots in said lower arm to permit the adjustment of the stationary dog along the lower arm and to secure it in position, and means to rock the dog carrier upwardly at the depression of each key.

3.111 a typewriting machine, an escapement wheel suitably journaled on the frame,-.

frame and having upper and lower arms arranged at an acute angle to each other extending on one side of the dog support, a link connecting the end of thelower arm to a vertical rod provided with a turn buckle,

a stationary dog secured to the lower arm by screws engaging w1th longitudinal slots in the lower arm, said dog upwardly extending therefrom to engage with the escapeme'nt wheel teeth, a loose dog'pivotally secured tothe upper arm and having a pin engaging in an opening in the upper arm, a' spring on the teeth slipping over the pawl. .In this conupper arm engaging with said pin, and a pinion connected to the escapement wheel to engage with the carriage rack.

4:. In the escapement mechanism of a typewriting machine, the combination "with the carriage, of the escapement wheel shaft suit- .a dog support suitably journaled on the 7 ably journaled on the frame, a pinion on said shaft engaging'with the carriage rack,

an escapement wheel on the shaft having marginal teeth on its. front surface, a two armed dog carrier suitably journaled on the frame ofxthe machine, a loose dog hung onthe upper arm of the carrier and having a guide pin en aging in a slot on said arm, a 3 arm engaging with said guide spring on sai pin for holding the swinging dog in position,-a stationary dog on the lower arm of the carrier, and means to rock the dog .car-

I rier upwardly at the depression of each key.

5. In the escapement mechanism of a typewriting machlne, the combination with the escapement wheel shaft suitably journaled on the machine frame, of acollar fixed on therearend of saidshaft, an escapementg wheel fixed on the front end of the shaft having forwardly extending crown teeth around the margin of its front surface, -a P1111011 ournaled on the shaft and.having ratchet teeth on its rear face, a pawl fitted to an opening in the front-face of the collar .to engage Witl1'.sai.d teeth, a spring to hold said pawl in engagement therewith, whereby the pinion in engagement with the carriage rack is connected to the escap'ement wheel to rotate step by step therewith asthe carriage escapement mechanism engaging with said moves toward the left, but to rotate nulependently of the escapement wheel when the -arriage is moved back toward the right, a dog carrier journaled on the frame adjacent to the escapement wheel and having upper and lower arms,-a stationary dog on the lower arm of the carrier, means to adjust the position of said dog along said lower arm, a loose dog hung on the upper carrier arm, a inon said dog engaging with an enlarg hole or slot-in said upper arm, and a spring engaging with said said loose dog upwardly;

.6. In the escapeinent mechanism of a typewriting machine, the combination with the machine frame, the carriage and the carriage rack, of an escapement Wheel shaft jour-' naled on the frame, an eseapement wheel on the shaft, a pinion journaled on the shaft engaging with the rack, a ratchet-connection between the pinion and the, escapement wheel, whereby they rotate together as the carriage moves from right to left, but the pinion rotates independently of the escapement wheel when the carriage is moved from left to right, of a dog carrier journaled on the frame adjacent ,to the escapement wheel having an upper and a lower arm,upper and lower. dogs on the respective arms, one dog being stationary and arranged to be adjusted longitudinally on the lower-arm, and the upper dog hung loosely on the upper arm.

7 In the carriage operating mechanism of a typewriting machine, the combination with the frame, of a universal bar rod j0ur-' naled thereon, a. universal bar arranged parallel thereto, guides for the universal bar, connections between said rod and the universal bar, whereby the forward and back movement of the universal bar rocks the rod and operates the escapement, the key levers and parts connected thereto, said parts being adapted to engage with the universal bar and move it forward when their respective key levers aredepressed, the carriage, the rack thereon, means tending to draw the carriage toward one side of the machine, the

pin to swing rack when in its normal position and connections between the universal bar rod and the escapement whereby the escapement is released and permitted to move one space at the depression and release of each key.

S. In a typewriting machine, the combination with the frame and the carriage, of a rack on the carriage, an escapement wheel journaled on the frame, a pinion in constant engagement with the rack and arranged to rotate with the wheel, a dog carrier pivotally supported on the frame, upper and lower dogs on the carrier, said dogs being adapted to be moved oppositely into engagement with the wheel teeth, the lower dog having a tapering tip of less-width than the distance between eachpair of teeth and connections between each key lever and the carrier, whereby the lower dog is raised into en a ement at the depression of each key and the upper dog is depressed into engagement at the release of each key and the first portion of the carriage movement takes place as the lower dog is being raised, said lower dog being adj ustable on itscarrier with reference to theescapement, and said upper dog being hung to swing freely.

9. In the escapement mechanism of a typewriting machine in combination -with the mainframe and the carriage, of an escape- 'ment ratchet suitably arranged, a two arm the dogs to divide the motion of the escape- I ment, and a ratchet and pawl connection bctween the escapement ratchet and the carriage.

In testimony whereof I aflix my signature in presence of two witnesses.

AUGUST SCHNEELOCH. Witnesses:

C. O. SOHOENECK. M. B. SMITH. 

